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Global Triassic tetrapod biostratigraphy and biochronology
Abstract Eight, temporally successive assemblage zones of tetrapod fossils provide the basis for dividing Triassic time into eight land-vertebrate faunachrons. These land-vertebrate faunachrons,Expand
Late Paleocene-early Eocene climatic and biotic events in the marine and terrestrial records
The transition from the Paleocene to the Eocene Epoch-approximately 55 million years ago-represents a critical moment in the earth's history, when the warmest climatic episode of the Cenozoic eraExpand
The Triassic timescale based on nonmarine tetrapod biostratigraphy and biochronology
Abstract The Triassic timescale based on nonmarine tetrapod biostratigraphy and biochronology divides Triassic time into eight land-vertebrate faunachrons (LVFs) with boundaries defined by the firstExpand
Global Permian tetrapod biostratigraphy and biochronology
  • S. Lucas
  • Geology
  • Geological Society, London, Special Publications
  • 2006
Abstract The most extensive Permian tetrapod (amphibian and reptile) fossil records from the western United States (New Mexico-Texas) and South Africa provide the basis for definition of 10Expand
Selachians from the Greenhorn Cyclothem ("Middle" Cretaceous: Cenomanian-Turonian), Black Mesa, Arizona, and the Paleogeographic Distribution of Late Cretaceous Selachians
Black Mesa in northeastern Arizona exposes sediments of late Cenomanian–Turonian age deposited during the transgressive–regressive Greenhorn cyclothem. These sediments contain a diverse selachianExpand
A global hiatus in the Middle Permian tetrapod fossil record
For about a half century, most vertebrate paleontologists have correlated the youngest Permian tetrapod assemblages in North America, which are from the San Angelo, Flowerpot and Chickasha formationsExpand
The Late Triassic timescale: Age and correlation of the Carnian–Norian boundary
The Late Triassic timescale is poorly constrained due largely to the dearth of reliable radio-isotopic ages that can be related precisely to biostratigraphy combined with evident contradictionsExpand
Tetrapod Footprint Biostratigraphy and Biochronology
Tetrapod footprints have a fossil record in rocks of Devonian-Neogene age. Three principal factors limit their use in biostratigraphy and biochronology (palichnostratigraphy): invalid ichnotaxa basedExpand
A new aetosaur (Reptilia: Archosauria) from the Upper Triassic of Texas and the phylogeny of aetosaurs
Detailed phylogenetic analysis reveals that several North American aetosaur taxa are junior subjective synonyms of previously named taxa. Expand